*  Licensed under the Apache License, Version 2.0 (the "License");

*  you may not use this file except in compliance with the License.

*  You may obtain a copy of the License at

*

*      http://www.apache.org/licenses/LICENSE-2.0

*

*  Unless required by applicable law or agreed to in writing, software

*  distributed under the License is distributed on an "AS IS" BASIS,

*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

*  See the License for the specific language governing permissions and

* limitations under the License.

*/

* <p>Controller for widget service resources.</p>

*

* <p>Supports the following methods:</p>

*

* <ul>

* <li>GET /services- index</li>

* <li>GET /services/{id} - show</li>

* <li>GET /services/{name} - show</li>

* <li>POST /services/{name} - create <em>requires authentication</em></li>

* <li>PUT /services/{id} {name} - rename <em>requires authentication</em></li>

* <li>DELETE /services/{id} - remove <em>requires authentication</em></li>

* </ul>

* @author scott

*

*/

  private static final long serialVersionUID = 6652819258720061792L;

 

  // Implementation

  /* (non-Javadoc)

   * @see org.apache.wookie.controller.Controller#show(java.lang.String, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

   */

  protected void show(String resourceId, HttpServletRequest request, HttpServletResponse response) throws ResourceNotFoundException, IOException{

    IWidgetService ws = getWidgetService(resourceId);

    returnXml(WidgetServiceHelper.createXMLWidgetServiceDocument(ws, getLocalPath(request),getLocales(request)), response);

  }

  /* (non-Javadoc)

   * @see org.apache.wookie.controller.Controller#index(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

   */

  protected void index(HttpServletRequest request, HttpServletResponse response) throws IOException{

      IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();

    IWidgetService[] ws = persistenceManager.findAll(IWidgetService.class);

    boolean defaults = (request.getParameter("defaults") != null);

    returnXml(WidgetServiceHelper.createXMLWidgetServicesDocument(ws, getLocalPath(request),defaults, getLocales(request)), response);

  }

 

  /* (non-Javadoc)

   * @see org.apache.wookie.controller.Controller#create(java.lang.String, javax.servlet.http.HttpServletRequest)

   */

  @Override

  protected boolean create(String resourceId, HttpServletRequest request)

      throws ResourceDuplicationException,InvalidParametersException {

    return create(resourceId);

  }

 

  /**

   * @param resourceId

   * @return

   * @throws ResourceDuplicationException

   */

  public static boolean create(String resourceId) throws ResourceDuplicationException,InvalidParametersException{

    if (resourceId == null || resourceId.trim().equals("")) throw new InvalidParametersException();

    IWidgetService ws;

    try {

      ws = getWidgetService(resourceId);

      throw new ResourceDuplicationException();

    } catch (ResourceNotFoundException e) {

        IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();

      ws = persistenceManager.newInstance(IWidgetService.class);

      ws.setServiceName(resourceId);

      return persistenceManager.save(ws);

    }

  }

  /* (non-Javadoc)

   * @see org.apache.wookie.controller.Controller#remove(java.lang.String, javax.servlet.http.HttpServletRequest)

   */

  @Override

  protected boolean remove(String resourceId, HttpServletRequest request)

      throws ResourceNotFoundException {

    return remove(resourceId);

  }

  /**

   * Removes a widget service and any associated objects

   * @param resourceId

   * @return true if successfully deleted

   * @throws ResourceNotFoundException

   */

  public static boolean remove(String resourceId) throws ResourceNotFoundException {

    IWidgetService service = getWidgetService(resourceId);

    if (service == null) throw new ResourceNotFoundException();

    String serviceName = service.getServiceName();

   

    // if exists, remove from widget default table

    IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();

    IWidgetDefault[] widgetDefaults = persistenceManager.findByValue(IWidgetDefault.class, "widgetContext", serviceName);

    persistenceManager.delete(widgetDefaults);

   

    // delete from the widget service table

    persistenceManager.delete(service); 

    // remove any widgetTypes for each widget that match

    IWidget[] widgets = persistenceManager.findWidgetsByType(serviceName);

    if (widgets == null||widgets.length==0) return true;

    for(IWidget widget : widgets){

      // remove any widget types for this widget

        Iterator<IWidgetType> typesIter = widget.getWidgetTypes().iterator();

        while(typesIter.hasNext()) {

            IWidgetType widgetType = typesIter.next();

                if(serviceName.equalsIgnoreCase(widgetType.getWidgetContext())){

                    typesIter.remove();

                }

        }

        persistenceManager.save(widget);

    }         

    return true;

  }

  /* (non-Javadoc)

   * @see org.apache.wookie.controller.Controller#update(java.lang.String, javax.servlet.http.HttpServletRequest)

   */

  @Override

  protected void update(String resourceId, HttpServletRequest request)

      throws ResourceNotFoundException,InvalidParametersException {

    String name = request.getParameter("name");

    if (name == null || name.trim().equals("")) throw new InvalidParametersException();

    IWidgetService ws = getWidgetService(resourceId);

    if (ws == null) throw new ResourceNotFoundException();

    ws.setServiceName(name);

    IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();

    persistenceManager.save(ws);

  }

 

  // Utilities

 

  /**

   * Find a widget service matching the supplied parameter either as the

   * service name or service id

   * @param resourceId

   * @return

   */

  private static IWidgetService getWidgetService(String resourceId) throws ResourceNotFoundException{

    if (resourceId == null) throw new ResourceNotFoundException();

    IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();

    IWidgetService ws = persistenceManager.findById(IWidgetService.class, resourceId);

    if (ws == null) {

      IWidgetService[] wsa = persistenceManager.findByValue(IWidgetService.class, "serviceName", resourceId);

      if (wsa != null && wsa.length == 1) ws = wsa[0];

    }

    if (ws == null) throw new ResourceNotFoundException();

    return ws;

  }

 

}